In addition to in-stream video placements, Ad Exchange has available in-game placements from our network of AdSense for Games publishers. This inventory expands the reach and volume available to your campaigns, especially for longer duration video ads. If you want to target in-game placements, you need do nothing, as targeting works the same as for in-stream video placements. If you don't want to target in-game placements, select the "in-game" category exclusion.